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Support toasting of shared system relations, and provide toast tables for

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pg_database, pg_shadow, pg_group, all of which now have potentially-long
fields.  Along the way, get rid of SharedSystemRelationNames list: shared
rels are now identified in their include/pg_catalog/*.h files by a
BKI_SHARED_RELATION macro, while indexes and toast rels inherit sharedness
automatically from their parent table.  Fix some bugs with failure to detoast
pg_group.grolist during ALTER GROUP.
This commit is contained in:
Tom Lane
2002-04-27 21:24:34 +00:00
parent 108871f4fc
commit c06f6a6bc2
27 changed files with 403 additions and 531 deletions
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40
src/backend/bootstrap/bootstrap.c
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@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/bootstrap/bootstrap.c,v 1.126 2002/04/25 02:56:55 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/bootstrap/bootstrap.c,v 1.127 2002/04/27 21:24:33 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -59,6 +59,9 @@ static void cleanup(void);
* global variables
* ----------------
*/
Relation boot_reldesc; /* current relation descriptor */
/*
* In the lexical analyzer, we need to get the reference number quickly from
* the string, and the string from the reference number. Thus we have
@ -500,20 +503,20 @@ boot_openrel(char *relname)
heap_close(rel, NoLock);
}
if (reldesc != NULL)
if (boot_reldesc != NULL)
closerel(NULL);
elog(DEBUG3, "open relation %s, attrsize %d", relname ? relname : "(null)",
(int) ATTRIBUTE_TUPLE_SIZE);
reldesc = heap_openr(relname, NoLock);
numattr = reldesc->rd_rel->relnatts;
boot_reldesc = heap_openr(relname, NoLock);
numattr = boot_reldesc->rd_rel->relnatts;
for (i = 0; i < numattr; i++)
{
if (attrtypes[i] == NULL)
attrtypes[i] = AllocateAttribute();
memmove((char *) attrtypes[i],
(char *) reldesc->rd_att->attrs[i],
(char *) boot_reldesc->rd_att->attrs[i],
ATTRIBUTE_TUPLE_SIZE);
/* Some old pg_attribute tuples might not have attisset. */
@ -523,8 +526,9 @@ boot_openrel(char *relname)
* defined yet.
*/
if (namestrcmp(&attrtypes[i]->attname, "attisset") == 0)
attrtypes[i]->attisset = get_attisset(RelationGetRelid(reldesc),
NameStr(attrtypes[i]->attname));
attrtypes[i]->attisset =
get_attisset(RelationGetRelid(boot_reldesc),
NameStr(attrtypes[i]->attname));
else
attrtypes[i]->attisset = false;
@ -547,9 +551,9 @@ closerel(char *name)
{
if (name)
{
if (reldesc)
if (boot_reldesc)
{
if (strcmp(RelationGetRelationName(reldesc), name) != 0)
if (strcmp(RelationGetRelationName(boot_reldesc), name) != 0)
elog(ERROR, "closerel: close of '%s' when '%s' was expected",
name, relname ? relname : "(null)");
}
@ -559,13 +563,13 @@ closerel(char *name)
}
if (reldesc == NULL)
if (boot_reldesc == NULL)
elog(ERROR, "no open relation to close");
else
{
elog(DEBUG3, "close relation %s", relname ? relname : "(null)");
heap_close(reldesc, NoLock);
reldesc = (Relation) NULL;
heap_close(boot_reldesc, NoLock);
boot_reldesc = (Relation) NULL;
}
}
@ -585,7 +589,7 @@ DefineAttr(char *name, char *type, int attnum)
int attlen;
Oid typeoid;
if (reldesc != NULL)
if (boot_reldesc != NULL)
{
elog(LOG, "warning: no open relations allowed with 'create' command");
closerel(relname);
@ -674,7 +678,7 @@ InsertOneTuple(Oid objectid)
if (objectid != (Oid) 0)
tuple->t_data->t_oid = objectid;
heap_insert(reldesc, tuple);
heap_insert(boot_reldesc, tuple);
heap_freetuple(tuple);
elog(DEBUG3, "row inserted");
@ -706,13 +710,13 @@ InsertOneValue(char *value, int i)
elog(DEBUG3, "Typ != NULL");
app = Typ;
while (*app && (*app)->am_oid != reldesc->rd_att->attrs[i]->atttypid)
while (*app && (*app)->am_oid != boot_reldesc->rd_att->attrs[i]->atttypid)
++app;
ap = *app;
if (ap == NULL)
{
elog(FATAL, "unable to find atttypid %u in Typ list",
reldesc->rd_att->attrs[i]->atttypid);
boot_reldesc->rd_att->attrs[i]->atttypid);
}
values[i] = OidFunctionCall3(ap->am_typ.typinput,
CStringGetDatum(value),
@ -806,8 +810,8 @@ cleanup()
elog(FATAL, "Memory manager fault: cleanup called twice.\n");
proc_exit(1);
}
if (reldesc != (Relation) NULL)
heap_close(reldesc, NoLock);
if (boot_reldesc != (Relation) NULL)
heap_close(boot_reldesc, NoLock);
CommitTransactionCommand();
proc_exit(Warnings);
}